JP2003151763A - Method of manufacturing organic LED element and organic LED element - Google Patents

Abstract

The present invention relates to a technique for disposing a desiccant inside an organic LED element. According to the present invention, a first discharged material containing a cured resin component containing a desiccant component is discharged to an inner bottom surface of a lid provided with a concave portion, and then a second discharged material is discharged to the second discharged material. 1 to form a desiccant raw material 8 having a low viscosity,
After that, the desiccant raw material 8 is cured, so that a desiccant composed of a cured resin and a desiccant component dispersed inside the resin is disposed on the inner bottom surface of the lid. For this reason, the work of pasting and fixing the sheet-like or powder-like desiccant, which has been conventionally required, to the inner bottom surface of the lid with an adhesive tape becomes unnecessary. This work has had to rely on manual work, which greatly hindered automation. However, according to the present invention, since this work is unnecessary, all steps can be automated.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for manufacturing an organic LED element and an organic LED element, and more particularly to an organic LED.
The present invention relates to improvement of a technique for disposing a desiccant inside an element.

[0002]

2. Description of the Related Art In recent years, organic LED elements have been attracting attention as elements for flat panel displays. FIG.
Reference numeral 101 indicates a conventional organic LED element. The organic LED element 101 has a main body 160 of the organic LED element.

The main body 160 includes a substrate 102 and first and second substrates.
Electrodes 127 and 128 and an organic thin film 103. The organic thin film 103 is disposed on one surface of the substrate 102, the first and second electrodes 127 and 128 are both arranged in a stripe shape, and the organic thin film 10 is orthogonal to each other.
3 are arranged so as to sandwich them from above and below, and when a voltage is applied between the first and second electrodes 127 and 128, the first and second electrodes are formed.
A current flows through the organic thin film 103 sandwiched between the electrodes 127 and 128 of the above, and the organic thin film 103 emits light. The substrate 102 and the first and second electrodes 127 and 128
Both are configured to transmit light, and the organic thin film 10
When 3 emits light, the light passes through the substrate 102 and is emitted to the outside.

Since the organic thin film 103 reacts and deteriorates when it comes into contact with moisture, a container-shaped lid 104 is arranged on the substrate 102 so as to cover the organic thin film 103 from above. A sealant 105 is arranged between the lid 104 and the substrate 102, and the lid 10 is covered by the sealant 105.
4 and the substrate 102 are hermetically sealed, the lid 104
The space 170 surrounded by the substrate 102 and the substrate 102 is shielded from the external atmosphere, and the organic thin film 103 disposed in the space 170 is closed.
Are not exposed to moisture in the external atmosphere.

A desiccant 108 is formed on the inner bottom surface of the lid 104.
Is attached and fixed with adhesive tape 109,
Even if a small amount of water is mixed in the space 170 surrounded by the lid 104 and the substrate 102, the water is absorbed by the desiccant 108 so that the organic thin film 103 does not come into contact with the water.

In order to fix the desiccant 108 to the inner bottom surface of the lid 104, a step of attaching the desiccant 108 placed on the inner bottom surface of the lid 104 to the inner bottom surface of the lid 104 with an adhesive tape 109 is performed. You will need it. This process was extremely difficult to automate with a machine and had to rely on manual work, which was a major obstacle in promoting automation of the manufacturing process.

[0007]

The present invention was created in order to solve the above-mentioned disadvantages of the prior art. When disposing a desiccant inside an organic LED element, the present invention can be easily performed without resorting to manual work. The purpose is to provide placement technology.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a desiccant arranging step of arranging a desiccant on the inner bottom surface of a container-shaped lid, and a voltage application. Has a main body on which an organic thin film that emits light is arranged on one surface, and the lid body, and the edge portion of the container opening of the lid body is attached to the one surface of the main body to block the organic thin film from the outside air. A method of manufacturing an organic LED element, comprising: a bonding step of forming an organic LED element by means of the above; wherein the desiccant arranging step includes first and second storage containers, and the first and second
First and second discharge devices in which first and second discharge pipes respectively connecting the first and second storage chambers inside the storage container to the outside are provided in the first and second storage containers, respectively. A first discharge containing a desiccant component and a curable resin component is placed in the first storage chamber, and a solvent component serving as a solvent for the curable resin component is placed in the second storage chamber. The second discharge device is put in, and the first discharge device discharges the first discharge substance in the first storage chamber from the first discharge pipe toward the inner bottom surface of the lid, The second discharge device discharges the second discharge substance in the second storage chamber from the second discharge pipe and drops it onto the first discharge substance. A second aspect of the present invention is the method for manufacturing an organic LED element according to the first aspect, wherein the second ejected substance ejected by the second ejecting device passes through the first ejecting pipe and is It falls on the first discharge. The invention according to claim 3 is the method for producing an organic LED element according to claim 1 or 2, wherein the curable resin component is either an ultraviolet curable resin or a thermosetting resin. On the other hand, it is composed. Claim 4
The described invention is the method of manufacturing an organic LED element according to any one of claims 1 to 3, wherein the first and second ejection devices are provided in the first and second storage chambers. First, second
In the state that the discharged substances of
When a predetermined amount of gas is introduced into each of the storage chambers, the gas exerts a pressure on the first and second ejected substances, and the first and second ejected substances in amounts corresponding to the prescribed amount become the first and second ejected substances. 1,
It is configured to be discharged from the second discharge pipe. According to a fifth aspect of the present invention, there is provided a main body in which an organic thin film that emits light upon application of a voltage is disposed on one surface, and a container-shaped lid, and an edge portion of a container opening of the lid is the one of the main body An organic LED element that is attached to a surface and is configured by blocking the organic thin film from the outside air, wherein the lid has a container portion disposed on an inner bottom surface of the lid, and the container portion Inside, a resin containing a desiccant component is arranged.
According to a sixth aspect of the invention, there is provided the organic LED element according to the fifth aspect, wherein the container portion is composed of a recess formed on the inner bottom surface of the lid body. The invention according to claim 7 is
It is an organic LED element of Claim 5, Comprising: The said container part is formed by the ring-shaped protrusion strip arrange | positioned at the inner bottom face of the said lid.

In the method of manufacturing an organic LED element of the present invention,
On the inner bottom surface of the lid body, a first discharge product having a desiccant component and a cured resin component is discharged from a first discharge pipe, and then a second discharge product is discharged from a second discharge pipe. 1 is dropped on the discharged material.

The first discharged product contains almost no component serving as a solvent for the cured resin component and has a high viscosity. However, the second discharged product is cured in the first discharged product. When the second discharged substance falls on the first discharged substance because the solvent component which is the solvent of the resin component is contained, the viscosity of the cured resin component of the first discharged substance becomes low, and as a result, the viscosity is low. A liquid desiccant raw material composed of a cured resin component and a desiccant component is obtained, and the desiccant raw material is placed on the inner bottom surface of the lid.

After that, when the cured resin component of the desiccant raw material is cured, a desiccant in which the desiccant component is dispersed in the cured cured resin component is formed and fixed to the inner bottom surface of the lid. In this way, the desiccant can be disposed on the inner bottom surface of the lid body by ejecting and arranging the first and second ejected substances on the inner bottom surface of the lid body. The step of attaching the agent to the inner bottom surface of the lid with an adhesive tape and fixing the agent is unnecessary. Since this process had to rely on manual work, it was a great obstacle to automation. However, according to the present invention, all the processes can be automated because the manual work of attaching and fixing is unnecessary.

Further, in the present invention, the second ejected substance is dropped onto the first ejected substance to obtain a desiccant raw material having a low viscosity. Since the viscosity is low, the desiccant raw material cannot rise to a high level, and flows out to the surroundings, resulting in a low height.

When the lid and the main body are hermetically sealed with the sealant, if the height of the desiccant raw material is high, the upper end of the first discharge material comes into contact with the organic thin film or the like on the main body side. Although a problem may occur, in the present invention, since the height of the desiccant raw material becomes low, such a problem does not occur.

In the present invention, the second discharge product is discharged from the second discharge pipe toward the first discharge pipe, and the second discharge product is discharged.
The discharge product may be configured to drop along the first discharge pipe onto the first discharge product.

The discharge port of the first discharge pipe has a high viscosity
Of the first discharge pipe may be clogged with the second discharge product, the second discharge product may be applied even if the first discharge product is attached to the first discharge pipe. First attached
Since the viscosity of the discharged product drops and drops from the first discharge pipe, the discharge port of the first discharge pipe is not clogged.

In the present invention, the cured resin component is
It may be composed of either an ultraviolet curable resin or a thermosetting resin. In this case, if the same curable resin as the encapsulant is used, the encapsulant can be cured and the cured resin component can be cured. As an example, when both the encapsulant and the curable resin component are composed of an ultraviolet curable resin, both the encapsulant and the curable resin component can be cured by irradiating them with ultraviolet light.

In the present invention, the first and second discharge devices are constructed so that a predetermined amount of gas can be introduced into the hollow portions of the first and second storage chambers. When a predetermined amount of gas is introduced into each of the hollow portions of the first and second storage chambers while the first and second discharged substances are contained in the hollow portion of the storage chamber of The first and second ejected substances in an amount proportional to the amount may be ejected from the first and second ejection pipes.

In the case of using the first and second discharge devices having such a structure, when a liquid having a low viscosity is put in the storage chamber, even if a predetermined amount of gas is introduced, the amount of the introduced gas is reduced. Since a proportional amount of liquid is not ejected, it becomes difficult to control the ejection amount. In particular, when a liquid having a low viscosity is used as a cured resin component and a desiccant component is contained therein, the amount of the desiccant component cannot be accurately controlled. The amount may vary.

In the present invention, since the desiccant component is contained in the first discharge product having a high viscosity and the first discharge product is discharged from the first discharge pipe, the discharge product is discharged from the first discharge pipe. The discharge amount of the discharged first discharge becomes substantially constant, and each organic LED
The amount of desiccant becomes constant in the device.

According to the organic LED element of the present invention,
The lid has a container portion. This container portion is arranged on the inner bottom surface of the lid body, and the resin containing the desiccant component is arranged therein.

According to this structure, when the resin is put inside the container portion in the step of arranging the resin, the resin is prevented from flowing out at the inner wall surface of the container portion, and the resin flows out to the outside of the container portion. There is no such thing. For this reason,
It is possible to prevent the resin from widely flowing to the inner bottom surface of the lid body.

In the organic LED element of the present invention,
The container portion may be formed by a recess formed on the inner bottom surface of the lid body or a ring-shaped ridge arranged on the inner bottom surface of the lid body.

When the container portion is formed by the concave portion, if the resin is dropped inside the concave portion, the resin is prevented from flowing out on the inner side surface of the concave portion, and the resin does not flow to the outside of the concave portion.

Further, in the case of forming the container portion by the protrusion, if the resin is dropped on the inner portion of the ring-shaped protrusion,
Since the outflow of the resin is stopped at the inner side surface of the ridge, the resin does not flow out to the outside of the ridge.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 10 in FIG. 1 shows a dropping device used in the method for producing an organic LED element of the present invention.

The dropping device 10 has a substrate stage 32. The surface of the substrate stage 32 is flat so that a lid plate, which will be described in detail later, can be supported horizontally. The substrate stage 32 is attached to a moving mechanism (not shown), and when the moving mechanism is operated, the substrate stage 32 itself can be moved while supporting the lid plate 20.

Above the substrate stage 32, the first and second
Discharge devices 21 ₁ and 21 ₂ are arranged. First, second
The discharge devices 21 ₁ and 21 ₂ of the first and second storage containers 24 are
₁ , 24 ₂ and first and second discharge pipes 25 ₁ , 25 ₂ , respectively.

The first and second storage containers 24 ₁ and 24 ₂ respectively have first and second storage chambers (not shown) therein, and the first and second discharge pipes 25 ₁ and 25 ₂ are The first and second storage chambers are respectively connected to the first and second storage chambers, and are configured to communicate with the outside via the first and second discharge pipes 25 ₁ and 25 ₂ .

The first, the second storage chamber first, second gas introduction pipe 23 _1, 23 ₂ of the one end is connected, first, second gas introduction pipe 23 _1, 23 ₂ at the other end A gas cylinder 55 containing a gas of a predetermined pressure is connected to the. First, second
In the middle of the gas introduction pipes 23 ₁ and 23 ₂ of the
Second control valves 22 ₁ and 22 ₂ are provided, and when the first and second control valves 22 ₁ and 22 ₂ are opened,
The _first and _second control valves 22 ₁ and 22 ₂ respectively connected to
It is configured so that gas can be introduced into the second storage chamber.

When the gas is introduced into the first and second storage chambers containing the liquid, the liquid level of the liquid is compressed by the introduced gas, and the amount of the gas proportional to the amount of the introduced gas is increased. The liquid is discharged from the discharge ports of the first and second discharge pipes 25 ₁ and 25 ₂ .

Reference numeral 20 in FIGS. 2 and 3 indicates the organic L of the present invention.
2 shows a lid plate used for manufacturing an ED device. 2 is a plan view of the lid plate 20, and FIG. 3 is a sectional view taken along the line AA of FIG.

The lid plate 20 is made of a flat glass plate. The lid plate 20 has a flat surface excavated in a rectangular shape at a plurality of locations, and as a result, the internal space 14 that is the excavated portion.
_{1 to} 14 ₁₆ and an opening edge portion 55 projecting from the surface of each of the internal spaces 14 _{1 to} 14 ₁₆ are provided.
4 _{1 to} 14 ₁₆ are separated from each other at the opening edge portion 55. The planar shape of the opening edge portion 55 is a lattice, and the inner spaces 14 _{1 to} 14 ₁₆ are arranged in a matrix. Recesses 12 _{1 to} 12 are formed in the central portions of the bottom surfaces of the internal spaces 11 _{1 to} 11 _16.
16 is provided, and a desiccant described later is arranged inside thereof.

The lid plate 20 has a plurality of lid portions separated by a cutting line 50 which is the center line of the opening edge portion. Here, as shown in FIGS. 2 and 3, one lid plate 20 has 16 lid portions 14 _{1 to} 14 ₁₆ . Each of these lid portions 14 _{1 to} 14 ₁₆ becomes a container-shaped lid body which will be described later in detail when the lid body plate 20 is cut along the cutout line 50 which is the center line of the opening edge portion 55. is there.

The desiccant arranging step of disposing the desiccant on the cover plate 20 which is a part of the method for manufacturing an organic LED device of the present invention using the dropping device 10 having the above-described structure will be described below.

In advance, the first and second storage containers 24 ₁ and 24 ₂
The first and second discharged substances are respectively put therein. Here, the first discharge product is formed by dispersing a powdery desiccant powder in an ultraviolet curable liquid resin.
The desiccant powder and the resin are examples of the desiccant component and the cured resin component of the present invention, respectively. On the other hand, the second ejected substance has an organic solvent that serves as a solvent for the resin of the first ejected substance. Next, the lid plate 20 is supported on the substrate stage 32 with the recesses 12 _{1 to} 12 ₁₆ facing vertically upward.

Next, the lid plate 20 is moved, and as shown in FIG. 4, the concave portion 12 ₁ of the lid portion 14 ₁ in which the desiccant is placed first among the plurality of lid portions 14 _{1 to} 14 ₁₆ is First discharge pipe 2
Align so that it is located vertically below 5 ₁ .

[0037] Figure 5 to the first discharge pipe 25 ₁ as shown is positioned vertically, the first discharge pipe 25 ₁ of the discharge port 29 ₁ is directed vertically downward, the first discharge pipe 25 ₁ When the first ejected substance is ejected from the first ejected substance, the ejected first ejected substance is
Is dripped on the bottom of the recess 12 ₁ positioned vertically below the discharge pipe 25 ₁ . Reference numeral 6 indicates the dropped first discharge product.
The first discharge product 6 has a high viscosity, does not flow out from the dropped position to the periphery thereof, and is arranged in a highly raised state at the bottom of the second recess 12 ₁ .

As shown in FIG. 6, the second discharge pipe 25
₂ is disposed obliquely above the first discharge pipe 25 ₁ ,
Discharge port 29 ₂ of the second discharge pipe 25 ₂ first discharge pipe 25 ₁
Is directed to. When the second discharge product 7 is discharged from the discharge port 29 _{2 of} the second discharge pipe 25 _2, the discharged second discharge product is hung on the _first discharge pipe 25 ₁ and then arranged vertically. Further, it is dropped on the first discharge product 6 vertically downward through the first discharge pipe 25 ₁ . Reference numeral 7 indicates the second discharged product.

When the second discharge product 7 is dropped on the first discharge product 6, the viscosity of the first discharge product 6 becomes low, and the desiccant raw material 8 is obtained as indicated by reference numeral 8 in FIG. To be The desiccant raw material 8 has a low viscosity and tries to flow out to the surroundings, but the outflow is stopped by the inner side surface of the concave portion 12 ₁ , and the desiccant raw material 8 does not flow outside the concave portion 12 ₁ and enters the concave portion 12 ₁ . It is arranged. In this state, the surface of the desiccant raw material 8 is flat and the height is low.

In this way, the recess 12 _{1 of one} lid 14 ₁
The bottom, when the desiccant material 8 is arranged to move the lid plate 20 as shown in FIG. 8, the lid portion 14 ₂ which arranged as shown in FIG. 9, then the first discharge product 6 The concave portion 12 ₂ is aligned so as to be positioned vertically above the _first discharge pipe 25 ₁ .

Then, the desiccant raw material 8 is placed in the recess 12 ₂ of the next lid portion 14 ₂ as in the case of the first lid portion 14 ₁ . After that, similarly, the desiccant raw material 8 is sequentially arranged in each of the concave portions 12 _{1 to} 12 _16, and the desiccant raw material 8 is arranged in the concave portions 12 _{1 to} 12 ₁₆ of all the lid portions 14 _{1 to} 14 ₁₆ . The desiccant arranging step is completed through the above steps.

After that, the lid plate 20 is removed from the substrate stage 32 and carried into a sealing device (not shown) to remove the lid plate 20.
While moving, the ring-shaped sealant is arranged on the opening edge portions 55 of all the lid portions 14 _{1 to} 14 ₁₆ , and the openings of the internal spaces 11 _{1 to} 11 ₁₆ are formed inside the sealant. Try to position it. When the desiccant raw material 8 and the sealant are placed on all the lid portions 14 _{1 to} 14 ₁₆ , the lid plate 20 is cut out to form the line 5.
Cut from 0 and cut the lid. One cut-out lid body is shown by reference numeral 4 in FIG. 10, and the sealant is shown by reference numeral 5. In this state, the lid body 4 is formed in a container shape in which the internal space 11 is recessed from the opening edge portion 55, and the bottom of the internal space 11 is the internal bottom surface of the container.

Then, as shown in FIG. 11, the lid 4 and the body 60 of the organic LED element are opposed to each other and aligned with each other. The main body 60 of the organic LED element has the substrate 2, the organic thin film 3, and the first and second electrodes 27 and 28. Of these, the organic thin film 3 and the first and second electrodes 27, 2
8 is arranged on one surface side of the substrate 2.

The main body 60 and the lid 4 were placed in a nitrogen atmosphere, and one surface of the substrate 2 on the side where the organic thin film 3 and the like were arranged faced downward so that the internal space 11 of the lid 4 was opposed. Then, the main body 60 and the lid 4 are aligned so that the entire organic thin film 3 is located above the internal space 11. next,
As shown in FIG. 12, the sealant 5 on the lid 4 is pressure-bonded to the surface of the substrate 2 of the main body 60.

Next, as shown in FIG. 13, ultraviolet rays 80 are irradiated from the outside of the lid body 4. Since the lid 4 is made of glass and transmits ultraviolet rays, the ultraviolet rays irradiate both the sealant 5 and the desiccant raw material 8. When irradiated with ultraviolet rays, the sealant 5 and the resin in the desiccant raw material 8 are both cured.

When the sealant 5 hardens, the substrate 2 and the lid 4 are hermetically sealed by the sealant 5, and the space 70 surrounded by the substrate 2 and the lid 4 is shielded from the external atmosphere. It On the other hand,
When the resin of the desiccant raw material 8 is cured, it is fixed in the recess 12 of the lid 4. A desiccant powder is dispersed in the hardened resin, and a desiccant composed of the desiccant powder and the hardened resin is obtained and placed in the recess 12 of the lid 4.
The desiccant is indicated by reference numeral 88 in FIG.

Through the above steps, the organic LED element 1 as shown in FIG. 14 is completed. In this organic LED element 1, the organic thin film 3 is sandwiched between the first and second electrodes 27 and 28 from above and below, and when a voltage is applied between the first and second electrodes 27 and 28, it is sandwiched between them. A current flows through the organic thin film 3 and the organic thin film 3 emits light. Since the substrate 2 of the main body 60 is made of glass and transmits light, the emitted light passes through the substrate 2 and is irradiated.

As described above, the organic LED of the present invention
According to the manufacturing method of the element, after the first discharge 6 containing the desiccant powder is dropped on the lid 4, the second discharge 7 is dropped to form the desiccant raw material 8 having low viscosity, After that, the desiccant raw material 8 is cured by ultraviolet irradiation to form a desiccant 88, which is fixed inside the recess 12 of the lid 4.

For this reason, it becomes unnecessary to attach a sheet-like or powder-like desiccant to the inner bottom surface of the lid with an adhesive tape to fix the desiccant, which is conventionally required. Since this work has to rely on manual work, it has been a great hindrance to automation. However, according to the present invention, this work is unnecessary, so that all steps can be automated.

Further, when the height of the desiccant raw material 8 is high, when the lid 4 and the substrate 2 are hermetically sealed with the sealant 5, the upper end of the desiccant 88 is an organic thin film on the main body 60 side. However, in the present invention, the second discharge product 7 is discharged onto the first discharge product 6 and the desiccant raw material 8 is discharged after the first discharge product 6 is discharged. Since the viscosity is low and the height is low, such a problem does not occur.

By the way, in the present embodiment, as described above, the first discharge product in which the desiccant powder is dispersed in the high-viscosity resin is dropped on the lid body 4, and then the second discharge product 7 is used as the first discharge product. Although the desiccant raw material 8 is obtained by lowering the viscosity of the discharged product, the desiccant powder is dispersed in a liquid resin having a low viscosity in advance, and the resin is dripped onto the lid body 4. Since it only has to be done once, it seems to be more convenient than the above-described embodiment.

However, as described above, the first and second
When the discharge devices 21 ₁ and 21 ₂ are used, if the liquid having a low viscosity is put into the first and second storage containers 24 ₁ and 24 ₂ , it becomes difficult to control the discharge amount thereof.

Therefore, when the desiccant powder is dispersed in a resin having a low viscosity where it is difficult to control the discharge amount, and the resin is discharged, the discharge amount varies, and the amount of the desiccant is different for each organic LED element. There is an inconvenience of being lost.

Therefore, in the present invention, the desiccant powder is contained in the first discharge product 6 having a high viscosity, and the first discharge product 6 is discharged from the first discharge pipe 25 ₁ . First discharge 6
Has a high viscosity, the amount discharged from the first discharge device 21 ₁ is constant, and the amount of desiccant powder disposed inside the plurality of organic LED elements 1 can be constant. In the present invention the viscosity of the first discharge was 6, and 2Ns / m ² or more 6 ns / m ² or less of the range, the viscosity of the second discharged product 7,
The range is 0.001 Ns / m ² or more and 0.05 Ns / m ² or less.

Also, the first discharge pipe 25₁Discharge port 29₁etc
If the first ejected substance 6 having a high viscosity adheres to the
Pipe outlet 29₁May clog, but in the present invention,
The second discharge product 7 that reduces the viscosity of the first discharge product 6 is
1 discharge pipe 25₁The first discharge pipe
25₁Even if the first ejected substance 6 adheres to the second ejected substance 7,
When applied, the viscosity of the adhered first discharge product 6 decreases.
Then the first discharge pipe 25 ₁Falls from the first discharge pipe
25₁Discharge port 29₁No longer gets clogged.

Further, in the above-described embodiment, the first discharge
Tube 25₁Is arranged vertically, and the second discharge pipe 25₂Diagonally
Although arranged, the first and second discharge pipes 2 of the present invention
5₁, 25₂The arrangement of is not limited to this, but the second
Discharge pipe 25₂Discharge port 29₂From the second ejected substance 7
Then, the discharged second discharged material 7 is discharged to the first discharge pipe 25.
₁So that it is dripped onto the first discharge product 6
It should be configured in. For example, the first discharge pipe 25₁To
The second discharge pipe 25 is arranged diagonally.₂Vertically, and
1 discharge pipe 25₁The second discharge pipe 25 vertically above the tip of the₂
Discharge port 29₂You may arrange so that may be located.

Although an ultraviolet curable resin was used as the solvent component constituting the first discharge 6, the solvent component of the present invention is not limited to this, and for example, a thermosetting resin is used. May be.

Further, in the above-mentioned embodiment, the concave portion 12 is provided on the inner bottom surface of the lid 4 as the container portion of the present invention, and the desiccant is placed inside the concave portion 12, but the container portion of the present invention is not limited to this. Instead, for example, like an organic LED element indicated by reference numeral 31 in FIG. 15, a ring-shaped protrusion 38 may be arranged on the inner bottom surface of the lid body 4 and the protrusion 38 may be used as a container portion. In FIG. 15, the desiccant 88 has a ring-shaped member 38.
It shows the state of being placed inside.

In the organic LED element 31 having such a structure, in order to arrange the desiccant 88 inside the ridge 38, the ridge 38 is arranged on the inner bottom surface of the lid 4, and the above-mentioned inside of the ridge 38 is described. The first and second discharge products 6 and 7 are sequentially dropped to obtain a desiccant raw material 8, and the desiccant raw material 8 is cured.

The desiccant raw material 8 has a low viscosity and tends to flow out to the surroundings, but the inner side surface of the protrusion 38 prevents the desiccant raw material 8 from flowing out, and the recess 12 is provided on the inner bottom surface of the lid 4. Similarly to the case, it is possible to prevent the desiccant raw material 8 from flowing out to the outside of the ridge 38.

The thickness of the protrusion 38 is shallower than or equal to the depth of the internal space 11. With this structure, the upper end of the protrusion 38 does not protrude from the edge portion of the opening of the lid 4, so that the protrusion 38 contacts the organic thin film 3 when the lid 4 and the substrate 2 are sealed. No trouble occurs.

[0062]

The process of disposing the desiccant in the organic LED element can be completely automated.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a dropping device used in a method for manufacturing an organic LED element according to an embodiment of the present invention.

FIG. 2 is a plan view showing a lid plate used in a method for manufacturing an organic LED element according to an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a lid plate used in a method for manufacturing an organic LED element according to an embodiment of the present invention.

FIG. 4 is a first diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 5 is a second diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 6 is a third diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 7 is a fourth diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 8 is a fifth diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 9 is a sixth diagram illustrating a desiccant placement step according to an embodiment of the present invention.

FIG. 10 is a sectional view illustrating a structure of a lid body according to an embodiment of the present invention.

FIG. 11 is a first diagram illustrating a sealing step according to an embodiment of the present invention.

FIG. 12 is a second diagram illustrating a sealing step according to the embodiment of the present invention.

FIG. 13 is a third diagram illustrating a sealing step according to the embodiment of the present invention.

FIG. 14 is a sectional view illustrating an organic LED element according to an embodiment of the present invention.

FIG. 15 is a sectional view illustrating an organic LED element according to another embodiment of the present invention.

FIG. 16 is a sectional view illustrating a conventional organic LED element.

[Explanation of symbols]

1 ... Organic LED element 2 ... Substrate 3 ... Organic thin film
4 ... Lid 5 ... Sealant 6 ... 1st discharge thing 7 ... 2nd discharge thing 21 ₁ ... 1st discharge device 21 ₂ ... 2nd discharge device 24 ₁ ... 1st storage container 24 ₂ ... Second storage container 2
5 ₁ ... 1st discharge pipe 25 ₂ ... 2nd discharge pipe

Claims (7)

[Claims] 1. A desiccant disposing step of disposing a desiccant on an inner bottom surface of a lid formed in a container shape, a main body having an organic thin film that emits light when a voltage is applied on one surface, and the lid. A method of manufacturing an organic LED element, which comprises a step of attaching an edge portion of the container opening of the lid to one surface of the main body, and attaching the organic thin film to the outside air to form an organic LED element. Then, the desiccant arranging step has first and second storage containers, and first and second connecting the first and second storage chambers in the first and second storage containers to the outside, respectively. A second discharge pipe is provided with the first and second discharge devices respectively provided in the first and second storage containers, and the first storage chamber has a desiccant component and a cured resin component. The discharge component 1 is put into the second storage chamber, and the solvent component serving as the solvent for the cured resin component is placed in the second storage chamber. A second discharge product having a discharge gas is introduced, and the first discharge device discharges the first discharge product in the first storage chamber from the first discharge pipe and drops it onto the inner bottom surface of the lid body. Then, the second discharge device discharges the second discharge product in the second storage chamber from the second discharge pipe and drops it onto the first discharge product. . 2. The second discharge device discharges a second discharge product in the second storage chamber from the second discharge pipe, and the second discharge product is the first discharge pipe. The method of manufacturing an organic LED element according to claim 1, wherein the organic LED element falls on the first ejected material along the flow path. 3. The method of manufacturing an organic LED element according to claim 1, wherein the curable resin component is composed of either an ultraviolet curable resin or a thermosetting resin. 4. The first and second discharge devices are the first and second discharge devices.
When a predetermined amount of gas is introduced into each of the first and second storage chambers in a state where the first and second discharged substances are placed in the second storage chamber, the first and second gases are introduced by the gas. 5. The discharge product according to claim 1 receives pressure, and the first and second discharge products in an amount corresponding to the predetermined amount are discharged from the first and second discharge pipes. 4. The method for manufacturing an organic LED element according to any one of 3 above. 5. A main body having an organic thin film, which emits light upon application of a voltage, disposed on one surface thereof, and a container-shaped lid, wherein an edge portion of a container opening of the lid is attached to the one surface of the main body. And the organic thin film is an organic LED element configured by being shielded from the outside air, wherein the lid has a container portion arranged on an inner bottom surface of the lid, and in the container portion, An organic LED element in which a resin containing a desiccant component is arranged. 6. The organic LED element according to claim 5, wherein the container portion is formed of a recess formed on the inner bottom surface of the lid body. 7. The organic LED element according to claim 5, wherein the container portion is formed of a ring-shaped protrusion provided on the inner bottom surface of the lid body.